Sawing-machine.



N o. 884,744. PATENTED APR.14, 190s,

' 0. L. LIBBY & PJJ. CONNOR.

SAWING MACHINE.

APPLIOATION TILED MAY 15,1907.

3 SHEETS-SHEET 1.

Witnesses: (PM Inventors.

Attorney PATENTED APR 14, 1908. CONNOR. SAWING MACHINE. APPLICATION FILED MAY 15.1907.

0. L. LIBBY & P. J

3 SHEETSSHEET 3.

I 1/1i111Ill/0IIll/1I!Ill/1111111Ill/11111111111111!1/ WQWSLM (m3, 34. (kW

lgentors 00. L8- ln, M Attorney Witnesses UNITED STATES PATENT OFFICE..

CHARLES LEON LIBBY, OF INDIANAPOLIS, INDIANA, AND PETER J. CONNOR, OF MADISON,

"f WISCONSIN.

SAWING-MACHINE Specification of Letters Patent.

Patented April 14, 1908,

Application filed May 15, 1907. Serial No. 373,742.

cation.

This invention, pertaining to improvements in. sawing machines, adapted for a variety of uses but designed with special reference to butchers? use, will be readily understood' from the following description taken in connection with the accompanying drawings in which:- a

Figure 1 a side elevation of an ex.-

emplifying machine embodying our inven- '20 t1on: Fig. 2--a..s 1milar view with a-number of the parts shown in verticalsection: Fig. 3 a horizontal sectlon of the saw-housing:

' and v4 a diagram exemplifying a preferred system of electrical connections when the machine is driven by electric motor.

In'the drawings: 1, indicates a horizontal guideway: 2, a carriage arranged for free adustn1ent lengthwise of the uideway; 3, a turntable bearing supp;ort(l y the carria e and'having its'axis vertical: 4, aturntabe fmounted forrotation in'said bearing: 5, a g horizontal bearin carried by the turntable: f 6','a swivel, in the? orm of an inclosing casing, supported by. 'th'e horizontal bearing oi'the turntable: 6, a trunnion carried by the v swivel and engagingthe horizontal bearing of i Q s the-turntable.:.7, a vertical bearing carried by the swivel and, in the present case, project-.

ing downwardly through the turntable, the

v '40, turntable having a-central opening'of'sufiicient size to permit thefree movement of th\e swivel throughthe desired angle: 8, a bevel-- orizontal and .at :ri ht'angles'to the trunf 5 .-nion of, 'tlie' swivel-,1 is gear forming-also a crank: 9, a 'bevel pinion disposed the 'fswivel and engaging"the-bevel-geari- 1-0, the shaft of-thebeveLpinion, journaled in the 'bearin 7'. 11, thesaw-housing, considered as; 5. a who e, this-housing being connected with the'swivelandprojecting outward therefrom o at right angles to the axis'of the bevel gea'ri.

' 12, a guideway in the heel of the saw housing,

this'guideway being inthe form of a cylinder 5 with its axis'inters'ecting the axis of the bevel case the meat-cutters block: 22, a stud car-.

gear: 23, a sleeve carried by the heel of the 28,: an' electric motor: 29, a countershaft geared to'themotor; 80, a shaft, shown as of flexible ty e, articulately connecting the it with the shaft of thebevel pinion: 31., a friction clutch to serve in connect ing the 'countershaft at will with the motor:

car journaled within the swivel with its axiscontrollingithe' running of the motor: 34,a

pair of semi-circular metallic segments car- 'ri ed by the'turntable and straddled by and brushes, the gaps betweenthe ends of these segments being wider than the brushes so 3 there will be no electrica gear: 13, a crosshead working in this guideway, the crosshead having the form of a iston at its rear, its forward portion being attened at the sides and working through the front head of the cylindrical guideway: 14, a connecting rod connecting the crank in of the bevel gear with a wrist in the cross cad: 15, a guideway at the outer end ofthe sawjhousing with its axis preferably in line with g that of the crosShead: 16, a handle at the front portion: of the saw-housin '2' 17, the saw frame, having its heel attache to the crosshead: 18, a guide carried by thesaw-housing andengaging an intermediate portion of the saw-frame: l9, a guide-rod projecting. from the front portion of the saw-fr'ame'andengaging guideway 15 of thesaw'housing: 20,

the saw blade, with its toothed edge parallel with the path of reciprocating motion of the saw frame: 21 the. work table, inthe present ried by the. swivel with its axis at'right an- 'gles to-the trunnion ofthe swivel, and preferably concentric with the'axis oi'the bevel saw housing and engaging thisstud: 24,41 col'umn supported by the turntable: 25, a sheave carried by the upper end ofthe' column 26, acounterbalance'wei htmoving X vertically in thecolumn? 27, a exible con nection engaging the counterbalance weight and sheave 'andsaw housing to counterbalance-the'latter as it is raised and lowered angularly with stud 24 as'the center of motion:

countersha 32, a treadle connected-with the clutch and serving, when depress'ed, -to cause themotor to transmit'mot ion to the mechanism of the machine": 33, a pair of brushes in a circuit '10 making electrical connection between the that when the turntable is in such position that the brushes are at a gap in the segments connection between the brushes: 35, a.- clamip connected with the carriage and serving, desired, to

look it firmly to its horizontal guideway: 36,

a stop'carried by the turntable and adapted to arrest the downward movement of the saw-housing when the toothed edge of the saw reaches the block: 37, anti-friction wheels cooperating with the carriage and its horizontal guideway to facilitate the shiftingof the carriage: 38, the supply mains of the motor: 39, the starting 'switchr40, the motor field: 41, a rheostat in the motor circuits: 42, the rheostat arm; and 43, the front head of the cylindrical guideway of the crosshea this head carrying packing to engage the front ortion of the crosshead.

Norma y the motor is in motion but with the friction clutch disengaged and themachine at rest. The machine may be started at any time by pressure on the treadle and will remain in motion so long as the treadle is de ressed. ,The saw-housing is grasped by the andle 19 and is swung up or down as desired, rocking on stud'22 as a pivot, the weight of the rocking parts being counterbalanced by the weight 26 which, if desired, may be made to overbalance the parts so that they are normally in an upper position and require to be pressed downy; ing motion of the parts is quite inde endent of the other motions which are rovi ed for.

The carriage may be shifte guideway as desired or it may be clamped in fixed position upon the guideway. The shifting of the carriage along on the guideway permits the saw to operate at various points along on the block, it being understood, of course, that the block may have any length desired represented either by.a single lon block or by a plurality of blocks placed in ine.

The general upper structure may be tilted on a horizontal axis parallel with the saw blade, trunnion 6 forming the axis of this tilting motion, and'this tilting is independent of the other motions of the saw housing. It.

' it to be observed that the axis of trunnion 6 on which this tilting takes place coincides with the tooth edge of the saw, in other Words, with the tooth edge of the saw down on the block that edge represents the axis of tilting motion.

The saw-housing may be swung round horizontally, the turn-table forming the pivot, this motion being independent of the other'motions. The saw structure may. be swung to various angles on the block or it may be swun around in a complete circle to cooperate wit 1 the circular ser es of blocks, or it may be swun to idle position oil of the block. The brush arrangement is manifestly such that when the saw is swung around into an idle position at right angles to that illustrated in Fig. 2, the gap between segments 34 comes opposite the brushes, thus breaking the motor circuit and causing the motor to come to rest. The reciprocating This rockalong on the mechanism therefore automatically ceases its motion when the operators foot is taken from the treadlc, and the motor automatically ceases its motion when the saw is' swung round to idle position.

It is to be observed that the structure is provided with such inclosing features as to satisfactorily provide for lubrication without serious danger of the lubricant getting onto the block. [The motor circuits illustrated are merely exemplifying in character.

The location of the motive mechanism below instead of above the saw apparatus is a matter of preference, as is also the employment of an electric motor as a motive device.

The particular use to which the apparatus is to be put will in many cases control specific features of design and the device well lends itself to many modifications at the hands of the skilled machine constructor, the particular organization set forth being a mere exemplification. It has been our purpose herein'merely to explainthe prin-' .ciple of our invention and the best mode in which we have contemplated applying that principle.

We claim Y 1. A sawing machine comprising a turntable, a horizontal pivot supported by the turn-table, a crank with its axis coinciding with the axis of said pivot, a saw-housing mounted on said ivot, a guideway carried by the heel'of the -rousing at right angles to said pivot, a crosshead reciprocating in said guidew ay, a connecting rod uniting the crank and crosshead, a saw-frame mounted for reciprocation in the housing and connected with the crosshead, a bevel gear on said crank, a shaft supported by the turn-table at right angles to theaxis of the crank, a bevel pinion on said shaft and engaging the bevel frame mounted for reciprocation in the housing and connected with the crosshead, and means for turning the crank, combined substantiall as set forth.

3. A sawing machine comprising a turntable having a vertical axis, a saw-housing connected with the turn-table by a ivot having a horizontal axis, a sawame mounted for reciprocation in the housing, mechanism supported by the turn-table for reciprocating the saw-frame, a power device.

for actuating said mechanism, and a device carried by the turn-table for severing the power connection when the saw-housing is device carried mall seams 4. A sawing'machine comprising a turntable having a vertical axis, a saw-housing connected with the turn-table by a ivot having a horizontal axis, a saW-fi ame mounted for reciprocation in the housin mechanism so ported by the turn-table for e saw-frame, an electric motor, operative connections between the'mo- I torand said mechanism, separatedcontact devices in the motor circuit, and a contact by the turn-table and nory connecting the first-mentioned contact devices and having a gap for leaving them disconnected when the turn-table is in a .given position, combined substantially as 3 I set forth.

5. A sawing machine comprising a pivoted saw-housing, a saw-fram'e-reciproeating therein,1mechanism at the heel of the housing for 'reciprocating the saw-frame, an electric motor, .a shaft connecting-the. motor and said shaft -and serving I I 'en age it from the motor, a treadle' for .con-

mec'hanism, afclutch-connected with" said i .215

to engage it with and dis trolingsaid clutch, and a motor-controlling I device at the heel ranged to open themotor circuit'when the so'ffsaw housing istu'rned to ofthesaw-housing and ar- ;a glven position f ctm bination of V a Work-table,lfsiip -i and z supporting ineans permittin" thesa v'v blade to swing toward and from t e work and toplaced at .variousangles inrelation' tdthefiioflivzith regard to both the and cuttingiline; a stationary motor-,5 means t r ngthe saw 'motor.

- 7. The combination of a eiforktable, sup} porting'means," sawing inechariisrn'carried-byi S id means: movably'in aims-Banan in relation to the table and comprising a saw, a saw-housing carrying the saw reciprocably, means intermediate the saW and supporting means permitting the saw-blade to swing toward and from the Work and. to be placed at various angles in relation to the Work with regard to both the direction and cutting line, a stationary motor, means for driving the saw from the motor in any of its positions, means controlled by the position of the housing for regulating the motor,

and a clutch interposed in the driving means.

8; The combination of a Work-table, a casing, a saw-housing pivotally mounted on the saw reciprocably mounted in guides in the hous1ng, a bearing, a swivel'having an axis perpendicular to the pivot of the housing suphousing, .a bearing,

orting means for the "saw'reciprocabl-y,

directionof :bladeewidth fr mthem t e nr f I 1ts positionsand means controlledthy the PO SlftlOn of; the; hous ng I for regulat ng the supporting the hearing so that it may turn on an axis perpendicular to both the pivot and swivel axes, a stationary motor and driving mechanism connecting the motor With the of its adjustable positions.

9, The combination of a work-table, a casing, a sau housing pivotally mounted on the casingto swing toward and from the table, a saw reciprocably mounted inguides in the perpendicular to the pivot of the housing su porting the casing in' the bearing, a turntab e rotatable on an {tXiS perpendicular to the axes of the pivot and swivel aforesaid, supturntable permitting inear movement' of the'latter in relation to ical driving means con the saw and serving to reciprocate the'sa'w any of its adjustable positions.

CHARLES LEON LIBBY. PETER J. CNNOR.. -l/Vitnesses as to Libby: i, Etienne rinntn nn'r HEPBURN,

I Y W 1LLIAM Luci: MILLHULLAND, Jr. Witnesses as to Connor: p

" Jenn R. CANT-WELL,

' FRANK W. CANTWELL.

of blade-width casing to swing toward and from the table, a

porting the casing in the bearing,means for.

saw and serving to reciprocate'the saw in any a swivel having an axis f the Work-table, a stationary motor, a mechannecting the motor with, 1n 4 a 

